The effects of variable oxygen partial pressures during Bi-2223 tape processing
The effect of changes in the oxygen partial pressure during the heat treatment of Bi-2223 tapes has been investigated. Distinct differences were observed in the phase assemblages, compositions, and critical current densities. Of particular importance in the correlation of transport properties and mi...
Gespeichert in:
| Veröffentlicht in: | Journal of Materials Research 1997-11, Vol.12 (11), p.3046-3054 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 3054 |
|---|---|
| container_issue | 11 |
| container_start_page | 3046 |
| container_title | Journal of Materials Research |
| container_volume | 12 |
| creator | Holesinger, T. G. Bingert, J. F. Willis, J. O. Maroni, V. A. Fischer, A. K. Wu, K. T. |
| description | The effect of changes in the oxygen partial pressure during the heat treatment of Bi-2223 tapes has been investigated. Distinct differences were observed in the phase assemblages, compositions, and critical current densities. Of particular importance in the correlation of transport properties and microstructure was the redistribution of lead in both the secondary phases and the Bi-2223 matrix. The highest Jc values were associated with tapes that contained Ca2PbO4 as part of the phase assemblage coupled with lower concentrations of lead in the superconducting phase. The high Jc of 30.4 kA/cm2 was obtained in tapes processed at 820 °C where the oxygen partial pressure was increased from 10% O2/Ar to 20% O2/Ar after 25 h of each 50-h sinter cycle. Samples processed only in 10% O2/Ar at 820 °C did not contain Ca2PbO4, had slightly higher concentrations of lead in the superconducting phase, and had significantly lower Jc values. |
| doi_str_mv | 10.1557/JMR.1997.0398 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_proquest_miscellaneous_27385727</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><cupid>10_1557_JMR_1997_0398</cupid><sourcerecordid>26517212</sourcerecordid><originalsourceid>FETCH-LOGICAL-c401t-a64e0003e130d97945403e2b05114cbce313d09a94f9cddf8ca1024e905b2cae3</originalsourceid><addsrcrecordid>eNqFkU1P3DAQhq0KpC5Lj727F25Zxl9xfKTQbltAtIieLceZLKbZZLGTCv49Xi2CE-Iyo5l5NF8vIZ8ZLJhS-vjX5fWCGaMXIEz1gcw4SFkowcs9MoOqkgU3TH4kByndATAFWs7I1c0tUmxb9GOiQ0v_uxhc3SEdHh5X2NONi2NwHd1ETGnKhjZTDP2Kfg0F51zQ0W0wVwef6zl_SPZb1yX89Ozn5O_3bzenP4qLq-XP05OLwktgY-FKiQAgkAlojDZSyRzwGhRj0tceBRMNGGdka3zTtJV3DLhEA6rm3qGYky-7vkMag00-jOhv_dD3-RCrtNClzMzRjsnr3U-YRrsOyWPXuR6HKVmuRaV0tu-CpWKaM57BYgf6OKQUsbWbGNYuPloGdquBzRrYrQZ2q8ErH9KIDy-wi_9smXdUtlz-sedLXZ2V17-tyfzxc3-3rmNoVmjvhin2-ZNvTHgClSGWSg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>26517212</pqid></control><display><type>article</type><title>The effects of variable oxygen partial pressures during Bi-2223 tape processing</title><source>SpringerNature Journals</source><creator>Holesinger, T. G. ; Bingert, J. F. ; Willis, J. O. ; Maroni, V. A. ; Fischer, A. K. ; Wu, K. T.</creator><contributor>WCA</contributor><creatorcontrib>Holesinger, T. G. ; Bingert, J. F. ; Willis, J. O. ; Maroni, V. A. ; Fischer, A. K. ; Wu, K. T. ; WCA</creatorcontrib><description>The effect of changes in the oxygen partial pressure during the heat treatment of Bi-2223 tapes has been investigated. Distinct differences were observed in the phase assemblages, compositions, and critical current densities. Of particular importance in the correlation of transport properties and microstructure was the redistribution of lead in both the secondary phases and the Bi-2223 matrix. The highest Jc values were associated with tapes that contained Ca2PbO4 as part of the phase assemblage coupled with lower concentrations of lead in the superconducting phase. The high Jc of 30.4 kA/cm2 was obtained in tapes processed at 820 °C where the oxygen partial pressure was increased from 10% O2/Ar to 20% O2/Ar after 25 h of each 50-h sinter cycle. Samples processed only in 10% O2/Ar at 820 °C did not contain Ca2PbO4, had slightly higher concentrations of lead in the superconducting phase, and had significantly lower Jc values.</description><identifier>ISSN: 0884-2914</identifier><identifier>EISSN: 2044-5326</identifier><identifier>DOI: 10.1557/JMR.1997.0398</identifier><language>eng</language><publisher>New York, USA: Cambridge University Press</publisher><subject>BISMUTH OXIDES ; CALCIUM OXIDES ; COPPER OXIDES ; CRITICAL CURRENT ; HEAT TREATMENTS ; HIGH-TC SUPERCONDUCTORS ; LEAD OXIDES ; MATERIALS SCIENCE ; MICROSTRUCTURE ; PHASE STUDIES ; PRESSURE DEPENDENCE ; STRONTIUM OXIDES ; SUPERCONDUCTING COMPOSITES</subject><ispartof>Journal of Materials Research, 1997-11, Vol.12 (11), p.3046-3054</ispartof><rights>Copyright © Materials Research Society 1997</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c401t-a64e0003e130d97945403e2b05114cbce313d09a94f9cddf8ca1024e905b2cae3</citedby><cites>FETCH-LOGICAL-c401t-a64e0003e130d97945403e2b05114cbce313d09a94f9cddf8ca1024e905b2cae3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/573764$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><contributor>WCA</contributor><creatorcontrib>Holesinger, T. G.</creatorcontrib><creatorcontrib>Bingert, J. F.</creatorcontrib><creatorcontrib>Willis, J. O.</creatorcontrib><creatorcontrib>Maroni, V. A.</creatorcontrib><creatorcontrib>Fischer, A. K.</creatorcontrib><creatorcontrib>Wu, K. T.</creatorcontrib><title>The effects of variable oxygen partial pressures during Bi-2223 tape processing</title><title>Journal of Materials Research</title><addtitle>J. Mater. Res</addtitle><description>The effect of changes in the oxygen partial pressure during the heat treatment of Bi-2223 tapes has been investigated. Distinct differences were observed in the phase assemblages, compositions, and critical current densities. Of particular importance in the correlation of transport properties and microstructure was the redistribution of lead in both the secondary phases and the Bi-2223 matrix. The highest Jc values were associated with tapes that contained Ca2PbO4 as part of the phase assemblage coupled with lower concentrations of lead in the superconducting phase. The high Jc of 30.4 kA/cm2 was obtained in tapes processed at 820 °C where the oxygen partial pressure was increased from 10% O2/Ar to 20% O2/Ar after 25 h of each 50-h sinter cycle. Samples processed only in 10% O2/Ar at 820 °C did not contain Ca2PbO4, had slightly higher concentrations of lead in the superconducting phase, and had significantly lower Jc values.</description><subject>BISMUTH OXIDES</subject><subject>CALCIUM OXIDES</subject><subject>COPPER OXIDES</subject><subject>CRITICAL CURRENT</subject><subject>HEAT TREATMENTS</subject><subject>HIGH-TC SUPERCONDUCTORS</subject><subject>LEAD OXIDES</subject><subject>MATERIALS SCIENCE</subject><subject>MICROSTRUCTURE</subject><subject>PHASE STUDIES</subject><subject>PRESSURE DEPENDENCE</subject><subject>STRONTIUM OXIDES</subject><subject>SUPERCONDUCTING COMPOSITES</subject><issn>0884-2914</issn><issn>2044-5326</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNqFkU1P3DAQhq0KpC5Lj727F25Zxl9xfKTQbltAtIieLceZLKbZZLGTCv49Xi2CE-Iyo5l5NF8vIZ8ZLJhS-vjX5fWCGaMXIEz1gcw4SFkowcs9MoOqkgU3TH4kByndATAFWs7I1c0tUmxb9GOiQ0v_uxhc3SEdHh5X2NONi2NwHd1ETGnKhjZTDP2Kfg0F51zQ0W0wVwef6zl_SPZb1yX89Ozn5O_3bzenP4qLq-XP05OLwktgY-FKiQAgkAlojDZSyRzwGhRj0tceBRMNGGdka3zTtJV3DLhEA6rm3qGYky-7vkMag00-jOhv_dD3-RCrtNClzMzRjsnr3U-YRrsOyWPXuR6HKVmuRaV0tu-CpWKaM57BYgf6OKQUsbWbGNYuPloGdquBzRrYrQZ2q8ErH9KIDy-wi_9smXdUtlz-sedLXZ2V17-tyfzxc3-3rmNoVmjvhin2-ZNvTHgClSGWSg</recordid><startdate>19971101</startdate><enddate>19971101</enddate><creator>Holesinger, T. G.</creator><creator>Bingert, J. F.</creator><creator>Willis, J. O.</creator><creator>Maroni, V. A.</creator><creator>Fischer, A. K.</creator><creator>Wu, K. T.</creator><general>Cambridge University Press</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>8FD</scope><scope>JG9</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>19971101</creationdate><title>The effects of variable oxygen partial pressures during Bi-2223 tape processing</title><author>Holesinger, T. G. ; Bingert, J. F. ; Willis, J. O. ; Maroni, V. A. ; Fischer, A. K. ; Wu, K. T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c401t-a64e0003e130d97945403e2b05114cbce313d09a94f9cddf8ca1024e905b2cae3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>BISMUTH OXIDES</topic><topic>CALCIUM OXIDES</topic><topic>COPPER OXIDES</topic><topic>CRITICAL CURRENT</topic><topic>HEAT TREATMENTS</topic><topic>HIGH-TC SUPERCONDUCTORS</topic><topic>LEAD OXIDES</topic><topic>MATERIALS SCIENCE</topic><topic>MICROSTRUCTURE</topic><topic>PHASE STUDIES</topic><topic>PRESSURE DEPENDENCE</topic><topic>STRONTIUM OXIDES</topic><topic>SUPERCONDUCTING COMPOSITES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Holesinger, T. G.</creatorcontrib><creatorcontrib>Bingert, J. F.</creatorcontrib><creatorcontrib>Willis, J. O.</creatorcontrib><creatorcontrib>Maroni, V. A.</creatorcontrib><creatorcontrib>Fischer, A. K.</creatorcontrib><creatorcontrib>Wu, K. T.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Journal of Materials Research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Holesinger, T. G.</au><au>Bingert, J. F.</au><au>Willis, J. O.</au><au>Maroni, V. A.</au><au>Fischer, A. K.</au><au>Wu, K. T.</au><au>WCA</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The effects of variable oxygen partial pressures during Bi-2223 tape processing</atitle><jtitle>Journal of Materials Research</jtitle><addtitle>J. Mater. Res</addtitle><date>1997-11-01</date><risdate>1997</risdate><volume>12</volume><issue>11</issue><spage>3046</spage><epage>3054</epage><pages>3046-3054</pages><issn>0884-2914</issn><eissn>2044-5326</eissn><abstract>The effect of changes in the oxygen partial pressure during the heat treatment of Bi-2223 tapes has been investigated. Distinct differences were observed in the phase assemblages, compositions, and critical current densities. Of particular importance in the correlation of transport properties and microstructure was the redistribution of lead in both the secondary phases and the Bi-2223 matrix. The highest Jc values were associated with tapes that contained Ca2PbO4 as part of the phase assemblage coupled with lower concentrations of lead in the superconducting phase. The high Jc of 30.4 kA/cm2 was obtained in tapes processed at 820 °C where the oxygen partial pressure was increased from 10% O2/Ar to 20% O2/Ar after 25 h of each 50-h sinter cycle. Samples processed only in 10% O2/Ar at 820 °C did not contain Ca2PbO4, had slightly higher concentrations of lead in the superconducting phase, and had significantly lower Jc values.</abstract><cop>New York, USA</cop><pub>Cambridge University Press</pub><doi>10.1557/JMR.1997.0398</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0884-2914 |
| ispartof | Journal of Materials Research, 1997-11, Vol.12 (11), p.3046-3054 |
| issn | 0884-2914 2044-5326 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_27385727 |
| source | SpringerNature Journals |
| subjects | BISMUTH OXIDES CALCIUM OXIDES COPPER OXIDES CRITICAL CURRENT HEAT TREATMENTS HIGH-TC SUPERCONDUCTORS LEAD OXIDES MATERIALS SCIENCE MICROSTRUCTURE PHASE STUDIES PRESSURE DEPENDENCE STRONTIUM OXIDES SUPERCONDUCTING COMPOSITES |
| title | The effects of variable oxygen partial pressures during Bi-2223 tape processing |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-27T19%3A22%3A19IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20effects%20of%20variable%20oxygen%20partial%20pressures%20during%20Bi-2223%20tape%20processing&rft.jtitle=Journal%20of%20Materials%20Research&rft.au=Holesinger,%20T.%20G.&rft.date=1997-11-01&rft.volume=12&rft.issue=11&rft.spage=3046&rft.epage=3054&rft.pages=3046-3054&rft.issn=0884-2914&rft.eissn=2044-5326&rft_id=info:doi/10.1557/JMR.1997.0398&rft_dat=%3Cproquest_osti_%3E26517212%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=26517212&rft_id=info:pmid/&rft_cupid=10_1557_JMR_1997_0398&rfr_iscdi=true |